Question about David White 44 8834 1 22x Level Transit Package

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How do I Calibrate a David White Instrument TR-300 Transit. does not stay level when rotated

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Posted on Jan 02, 2017

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SOURCE: How to adjust a David White transit level

I just assisted a friend "re-calibrate" his D.W. L6-20 Level Transit. Follow the following steps.
1. Set up the tripod & transit in the garage. Get the platform with the protractor, close to level.
2. Position the telescope at "0". The telescope should be over 2 of the adjusting screws.
3. Adjust the screws to get the top bubble close to level. Adjust with a screwdriver the spring loaded screw to get the bubble closer to center.
4. Rotate the scope 180 degrees. Note the difference in the bubble position. Split the difference from the first bubble location by adjusting the same top screw.
5. Rotate back to 0. Adjust the same top screw to split the difference in bubble position.
6. Rotate back to 180 degrees. The bubble should be off by the same amount. Adjust the 2 bottom screw to place the level in the center.
7. Rotate back to 0. The bubble should not move.
8. Rotate to 90 degrees and adjust the 2 bottom screws to place the bubble in the center.
9. Rotate to 270 degrees. The bubble should be centered.
10. From this point on, all you need to do is place the level on the tripod and position it over your reference point with a plumb bob. Adjust the bottom 2 screws at 0 and again at 90. The level is set to use.

Posted on Aug 03, 2010

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How to remove dash panel to replace climate control panel


  1. Remove the instrument panel accessory trim plate around the control panel by prying gently and then pulling it straight out.
  2. Remove the control panel mounting screws.
  3. Pull the control panel straight out from the instrument panel.
  4. Disconnect the electrical connectors.
  5. Installation is the reverse order of removal.
  6. After installation, the actuators must be calibrated. For additional information, refer to the following section, -Actuator Calibration.-

  7. jturcotte_2255.gif

  8. Fig. Remove the screw and pull the control panel straight out of the instrument panel.

To calibrate the system:
  1. Place the ignition switch to the OFF position.
  2. Install the HVAC control module.
  3. Connect all previously disconnected components.
  4. Start the vehicle.
  5. Wait 40 seconds for the HVAC control module to self-calibrate.
  6. Verify that no DTCs have set as current DTCs.
  7. Place the ignition switch to the OFF position.
  8. With the Mode knob in the PANEL position, press and hold the AC button for 5 seconds.
  9. Rotate the Mode knob fully counterclockwise.
  10. Rotate the Mode knob fully clockwise.
  11. Rotate the Mode knob fully counterclockwise.
  12. Release the AC button.
  13. Wait 40 seconds for the HVAC control module to self-calibrate.
  14. Start the vehicle.

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1 Answer

How to adjust a David White transit level


I just assisted a friend "re-calibrate" his D.W. L6-20 Level Transit. Follow the following steps.
1. Set up the tripod & transit in the garage. Get the platform with the protractor, close to level.
2. Position the telescope at "0". The telescope should be over 2 of the adjusting screws.
3. Adjust the screws to get the top bubble close to level. Adjust with a screwdriver the spring loaded screw to get the bubble closer to center.
4. Rotate the scope 180 degrees. Note the difference in the bubble position. Split the difference from the first bubble location by adjusting the same top screw.
5. Rotate back to 0. Adjust the same top screw to split the difference in bubble position.
6. Rotate back to 180 degrees. The bubble should be off by the same amount. Adjust the 2 bottom screw to place the level in the center.
7. Rotate back to 0. The bubble should not move.
8. Rotate to 90 degrees and adjust the 2 bottom screws to place the bubble in the center.
9. Rotate to 270 degrees. The bubble should be centered.
10. From this point on, all you need to do is place the level on the tripod and position it over your reference point with a plumb bob. Adjust the bottom 2 screws at 0 and again at 90. The level is set to use.

Sep 05, 2009 | David White 44 8834 1 22x Level Transit...

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